OpenStack Nova Live migration fails to update persistent domain XML

CAO 8.3CVE-2020-17376 · GHSA-c7w7-9c85-4qxv · PYSEC-2020-243 · Công bố 26/08/2020 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2020-17376 là lỗ hổng mức CAO (CVSS 8.3) ảnh hưởng nova, nova (openstack).
Xác suất bị khai thác trong 30 ngày tới (EPSS): 1.7%, cao hơn 77.6% các lỗ hổng khác.
Cách xử lý: cập nhật lên 20.3.1, 21.1.0, 19.3.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
nova PyPI	`= 21.0.0≥ 20.0.0, < 20.3.1≥ 21.0.0, < 21.1.0< 19.3.1`	`20.3.121.1.019.3.1`
nova openstack	`= 21.0.0≥ 20.0.0, < 20.3.1< 19.3.1`	`20.3.119.3.1`

Mô tả

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.

Mô tả của NVD

An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.